[Solved] Openproj looks strange in the awesome WM

Question

Hi Community,
I just installed openproj from the AUR. But when I run it in the awesome WM, I found the background of the application looked nearly blank, which made openproj impossible to edit in.
It looks strange. So, openproj cannot be run from the awesome WM?
Any idea will be helpful. Thanks.
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Solved:
Just edit the file /usr/bin/openproj and add a line to be as follows:
#!/bin/sh
wmname LG3D
java -Xms128m -Xmx768m -jar /usr/share/openproj/openproj.jar > /dev/null
Last edited by cwjiof (2010-01-12 14:45:20)

Answer 1

Thank you very much!
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Edit:
I've found a detailed description from this article: Java GUI application in Awesome Window Manager.
There is a known problem with Java and the non-reparenting Window Managers like for example Awesome.
Java applications which use the XToolkit/XAWT backend may draw gray windows only. The XToolkit/XAWT backend breaks ICCCM-compliance in JDK 5 and 6 because it assumes a reparenting window manager.
There are a number of places where this is described:
    * in the FAQ : GUI Java apps appear as a gray screen!
    * in the wiki Problems with Java
    * in the Man page
To sum up:
    * it doesn't affect version Java 1.4.2 and before.
    * it doesn't affect version Java 1.7 and hopefully after.
    * the best workaround by far, is to set a name to the Window Manager, so it is recognise by Java as a non-reparenting Window Manager. A simple utility allow to set this name. Just add 'wmname LG3D' to your .xinitrc or simply run it.
    * Here are other workarounds left here for reference:
          o launch another X server, like Xephyr
          o set the following environment variable (to use the older Motif back-end instead): AWT_TOOLKIT=MToolkit. But this won't work in the following cases :
                + OpenJDK/IcedTea doesn't include the Motif toolkit.
                + doesn't work for x86_64 Java, for whatever reason
Last edited by cwjiof (2009-10-19 12:07:14)